Mica Parts Usded in Electric Arc Furnace Industry

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Shanghai
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100 pc
Supply Capability:
100000 pc/month

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Product Description:

 1. Introduction:

Mica is a rigid substrate able to withstand very high temperatures and are suited for applications up to 500°F (260°C). Mica heating elements offer several distinct advantages over other flexible heater technologies, including extremely low leakage, lower material costs, and higher operating temperatures. Our mica heating element is made by detail order requirments.

Mica plate is made of mica paper with highperformance organic silicon resin. After heating and pressing, the mica plate can be made into rigid or flexible insulating plates. The mica content is about 90% and the organic silicon resin content is 10%.

2. Applications:

Typical applications of mica heating elements are air heaters, enclosure systems, food service equipment, process and packaging equipment.

 

3. Main features of Mica Parts:

Mica heating elements offer several distinct advantages over other flexible heater technologies, including extremely low leakage, lower material costs, and higher operating temperatures.

 

4. Technical Parameters:

 

MICA SHEET     -----Technical data

ITEM

UNIT

RM

RP

RM-T

RP-T

FM

FP

Hardness

 

Rigid

Rigid

Rigid

Rigid

Flexible

Flexible

Mica paper

 

Muscovite

Phlogopite

Muscovite

Phlogopite

Muscovite

Phlogopite

Thickness

mm

0.1-2.0

0.1-2.0

3.0-50

3.0-50

0.1-2.0

0.1-2.0

Mica content

%

≥90

≥90

>88

>88

≥90

≥90

Bond Content

%

<10< span="">

<10< span="">

<12< span="">

<12< span="">

<10< span="">

<10< span="">

Density

g/m 3

1.6~2.45

1.6~2.45

2.1~2.4

2.1~2.4

1.6~2.45

1.6~2.45

Heat
 Resistant

Continuous

500

700

500

700

500

700

Peak

700

900

700

900

700

900

Heat loss at 500

%

<1< span="">

<1< span="">

<1< span="">

<2< span="">

<1< span="">

<1< span="">

Heat loss at 700

%

<2< span="">

<2< span="">

<1< span="">

<2< span="">

<2< span="">

<2< span="">

Flexural strength

Mpa

>160

>140

<1< span="">

<1< span="">

Water absorption 24h/23°C

%

<1< span="">

<1< span="">

<1< span="">

<2< span="">

Dielectric strength

KV/mm

>20

>20

>15

>15

>15

>15

Volume
Resistivity

23

ΩNaN

>1017

>1017

>1017

>1017

500

ΩNaN

>1012

>1012

>1012

>1012

Smoking Test

s

<4< span="">

<4< span="">

 

FAQ

We have organized several common questions for our clients,may help you sincerely

--------What is the use of mica parts?

Mica laminate and washers made of our own high quality mica plates are used for home appliances, electro-magnets, micro-sensitive control gear etc

 

---------Which type of mica parts we can produce?

1. Rigid mica parts or Flexible mica parts

2. Muscovite mica parts or phlogopite mica parts

3. Thin mica parts or thick mica parts

4. All the special sized mica parts need drawing.

 

----------what advantages of mica parts?

1. Good high voltage insulation materials

2. Do not easily break up

3. Easily produce special size

 

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Q:What type of enameled wire and insulation material is used for the compressor
Motor insulation class The insulation class is divided according to the permissible limit temperature of the insulation material used for the motor. There are Y, A, E, B, F, H, C and several other levels, the allowable limit temperature at all levels as shown in the table below. The so-called permissible limit temperature refers to the permissible maximum operating temperature of the motor insulation material, which reflects the heat resistance of the insulating material. Insulation material is divided into Y grade, A grade, grade E, grade B, grade F, grade H, grade C, permissible temperature (℃) 90,105,120,130,155,180, 180 ℃ or higher.
Q:What is the 8 ° C rule for insulating materials?
Such as A-class insulation material limit working temperature of 105 ℃, when the ultimate operating temperature of 8 ℃, its life will be reduced by about half, which is 8 ℃ thermal deterioration rules.
Q:What is the thermal aging and electrical aging of insulating materials?
Insulation materials in electrical equipment during the operation, due to the long-term effects of various factors, there will be a series of irreversible physical and chemical changes, resulting in its electrical performance and mechanical properties decline, commonly known as aging. There are many factors that affect the aging of insulating materials. The main aging forms are environmental aging, heat aging and electrical aging.
Q:The role and definition of insulating materials
Its resistivity is very high, usually in the range of 10 ^ 9 ~ 10 ^ 22Ω · m. Commonly used insulating materials according to their different chemical properties, can be divided into inorganic insulating materials, organic insulating materials and mixed insulation materials. Commonly used inorganic insulation materials are: mica, asbestos, marble, porcelain, glass, sulfur and so on,
Q:What kind of insulation is the insulating layer of the aluminum plate?
Insulation is the core technology of aluminum substrate. Currently on the market most of the aluminum substrate insulation layer using epoxy resin, the advantages of this type of insulation is: good adhesion; drawback is: thermal resistance, dielectric strength is limited, it is difficult to meet the safety requirements. Such aluminum substrates are only suitable for low power density applications. High-end aluminum substrate insulation layer is generally composed of high thermal conductivity and high insulation ceramic powder filled with special polymer composition.
Q:Wear-resistant, high temperature, insulation materials which
Alumina - high temperature, corrosion resistance, wear resistance. Good electrical insulation 1600 ℃. For crucible, high temperature thermocouple casing, knives, mold and so on. Silicon nitride - has good high temperature strength, thermal expansion coefficient is small, high thermal conductivity, thermal shock resistance, the use of temperature as alumina, good electrical insulation. 1200 ℃ still have a high hardness. For mechanical seal ring, thermocouple casing, steam turbine blades and so on. Silicon carbide - high temperature strength, 1400 ℃ when the bending strength of (500 ~ 600) MPa. For the nozzle, furnace tubes, high temperature bearings, high temperature heat exchangers and so on.
Q:What insulating material is used for high voltage cables
Features: The rated voltage of the cable is 6kv. The long-term operating temperature of the cable is + 65 ° C. The minimum bend radius of the cable is 6 times the cable diameter.
Q:What is the difference between insulation and pressure?
Insulation resistance is measured with an insulation resistance tester (10000V or less) or an insulation shaking table (2500V or less). Since the test voltage is low, many insulation defects are not easily found; the withstand voltage test test voltage is high and the high pressure equipment is easily found Insulation defects;
Q:Who knows what are the ability of 1300 degrees above the high temperature, insulation materials?
Heat-resistant polymers can be used as high temperature resistant film insulation materials, high temperature resistant fibers, high temperature resistant coatings, high temperature adhesives. In accordance with the high temperature of the time, but also sub-instant high temperature materials and high temperature materials for a long time. The former in 1000 ~ 10000 ℃ can withstand a few seconds to a few minutes.
Q:What are the gas insulation materials?
In addition to air, nitrogen, carbon dioxide and sulfur hexafluoride gas, there are other gases used for insulation. CCl2F2 (freon-12) was used as an insulating in certain high-energy physical devices. CCl2F2 breakdown strength and SF6 similar, but because of its high liquefaction temperature, and the spark will make CCl2F2 precipitation of carbon particles, therefore, has been replaced by SF6. In hydrogen-cooled generators, hydrogen is also used as insulation in addition to cooling media.

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